The HISTORIAN BADGE is based on playing only the Original 16 battles. So other battles do not come into play in that calculationHowever,(this is my conjecture)the ADVANCED HISTORIAN badge will probably involve something of a certain number of ALL the scenarios played on a certain battle date and so you can always be working toward that goal, just in case that is the required goal.

Mr Stevens I believe you are mistaken.

The Historian Badge should be awarded to a player who plays a scenario on (one of its) anniversay date(s).

The Advanced Historian badge should be awarded to a player who has played all of the original 16 scenarios on their anniversary.

There is a bug in the Advanced Historian Award in that some of the current recipients (myself included) have only played 15/16 on their anniversary. Perhaps we deserved a discount.

The Advanced Historian thread discusses the requirements for the Advanced Historian award.